[LTZ470]

I listed them in relevance to assistance required down to different add ons and carbs available...like the Thumper facts read & additional links at the bottom of Thumperfaqs page...also click the Index at the bottom of the page for additional valuable info links..

http://www.thumperfaq.com/jetting.htm
http://www.thumpertalk.com/forum/showthread.php?t=309069
http://www.thumpertalk.com/forum/showthread.php?t=239791
http://www.dirtrider.com/tech/141_0707_kei...tech/index.html
http://www.keihin-us.com/am/tuning/
http://jdjetting.server304.com/
http://home.att.net/~wbarrow/jd/download_jet.html
http://www.carbparts.com/keihin/needles_tu...g_your_carb.htm
http://www.carbparts.com/keihin/needles_tu...dle_changes.htm
http://www.factorypro.com/tech/carbkei.html
http://www.stealthracingtech.com/catalog.htm
http://www.motorcyclecarbs.com/Keihin_FCR-...retors_C663.cfm
http://www.cyclewareables.com/pages/keihin...x_and_parts.htm